PLAGUE n.
An acute malignant contagious fever, that often prevails in Egypt, Syria, and Turkey, and has at times visited the large cities of Europe with frightful mortality; hence, any pestilence; as, the great London plague. "A plague upon the people fell." Tennyson. Cattle plague. See Rinderpest. -- Plague mark, Plague spot,…
PNEUMATIC; PNEUMATICAL a.
tic action, or Pneumatic lever (Mus.), a contrivance for overcoming the resistance of the keys and other movable parts in an organ, by causing compressed air from the wind chest to move them. -- Pneumatic dispatch, a system of tubes, leading to various points, through which letters, packages, etc., are sent, by the fl…
PROGRESSION n.
hords; the movement of the parts in harmony; the order of the modulations in a piece from key to key. Arithmetical progression, a progression in which the terms increase or decrease by equal differences, as the numbers 2, 4, 6, 8, 1010, 8, 6, 4, 2 -- Geometrical progression, a progression in which the terms increase or…